Cat back or turbo back?
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Junior User
Joined: May 2004
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From: Central Texas
Cat back or turbo back?
On the '04 design, is there a noticable difference in performance gains between a cat-back exhaust system and a turbo-back exhaust system? I understand that there is going to be slightly more back pressure to the cat, but the cat is an open design and the real restriction should be the muffler. Based on some of the threads that indicate the 6.0 needs some back pressure, a cat-back system might be the answer.
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From: 3rd Rock
IMO cat back only keeps you from having some issues with Ford if there ever is a problem.
If you are out of warranty go with the works, believe me as soon as min is out I am doing the works
If you are out of warranty go with the works, believe me as soon as min is out I am doing the works
Post Fiend
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I spoke with the ford regional rep and although not in writing,
both he and my svc mgr said no problem with turbo back as long as I kept the cat in and didn't put an exhaust brake in...
And mine has been in for svc many times since with no problems...
and the back-pressure statment has still not been verified in everyone's mind...
both he and my svc mgr said no problem with turbo back as long as I kept the cat in and didn't put an exhaust brake in...
And mine has been in for svc many times since with no problems...
and the back-pressure statment has still not been verified in everyone's mind...
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From: 3rd Rock
Originally Posted by jdadamsjr
I spoke with the ford regional rep and although not in writing,
both he and my svc mgr said no problem with turbo back as long as I kept the cat in and didn't put an exhaust brake in...
And mine has been in for svc many times since with no problems...
and the back-pressure statment has still not been verified in everyone's mind...
both he and my svc mgr said no problem with turbo back as long as I kept the cat in and didn't put an exhaust brake in...
And mine has been in for svc many times since with no problems...
and the back-pressure statment has still not been verified in everyone's mind...
Post Fiend
Joined: Oct 2002
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Yep...
I did wait until I had my "new car" issues tweaked to ensure I wasn't create an issue for myself... but at this point I feel somewhat "safer"...
but it would be hard to prove that the "tail wagging the dog" caused an engine problem :-)
I did wait until I had my "new car" issues tweaked to ensure I wasn't create an issue for myself... but at this point I feel somewhat "safer"...
but it would be hard to prove that the "tail wagging the dog" caused an engine problem :-)
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From: 3rd Rock
Originally Posted by jdadamsjr
Yep...
I did wait until I had my "new car" issues tweaked to ensure I wasn't create an issue for myself... but at this point I feel somewhat "safer"...
but it would be hard to prove that the "tail wagging the dog" caused an engine problem :-)
I did wait until I had my "new car" issues tweaked to ensure I wasn't create an issue for myself... but at this point I feel somewhat "safer"...
but it would be hard to prove that the "tail wagging the dog" caused an engine problem :-)
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From: ft.lauderdale
I Will Know The Truth Soon
I HAVE INSTALLED THE BANKS CAT BACK SYSTEM AND IT WAS NO LOUDER THAN STOCK AND I COULD NOT TELL MUCH DIFFERENT OVER STOCK, SO i HAVE JUST PURCHASED A FULL TURBO BACK SYSTEM FROM SILVERLINE
I hope to install early next week and will check back with result's , I am only swapping after hearing a simular truck with the same full system and it sounded like a jet liner, and the owner said it was big gain on power.
2004 f350 6.0
patrick
I hope to install early next week and will check back with result's , I am only swapping after hearing a simular truck with the same full system and it sounded like a jet liner, and the owner said it was big gain on power.
2004 f350 6.0
patrick
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From: Snohomish, Washington
Originally Posted by roadracer68
I HAVE INSTALLED THE BANKS CAT BACK SYSTEM AND IT WAS NO LOUDER THAN STOCK AND I COULD NOT TELL MUCH DIFFERENT OVER STOCK, SO i HAVE JUST PURCHASED A FULL TURBO BACK SYSTEM FROM SILVERLINE
I hope to install early next week and will check back with result's , I am only swapping after hearing a simular truck with the same full system and it sounded like a jet liner, and the owner said it was big gain on power.
2004 f350 6.0
patrick
I hope to install early next week and will check back with result's , I am only swapping after hearing a simular truck with the same full system and it sounded like a jet liner, and the owner said it was big gain on power.
2004 f350 6.0
patrick
Post Fiend
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Yep, sometimes it takes "getting used to it" to be able to tell a difference...
I went from the stock 03 crushed downpipe to a 3.5" to 4" downpipe and it can't HELP but make a difference...
Seat of the pants I felt a difference... how much? I don't know since I have no hard numbers before and after...
Will take a picture of the stock downpipe they pulled off to show how ptitful it is !
Let say this - it is like a crushed and mishapen 2.5 inches compared to the smooth mandrel bent 3.5" which goed to 4 inches !!
I went from the stock 03 crushed downpipe to a 3.5" to 4" downpipe and it can't HELP but make a difference...
Seat of the pants I felt a difference... how much? I don't know since I have no hard numbers before and after...
Will take a picture of the stock downpipe they pulled off to show how ptitful it is !
Let say this - it is like a crushed and mishapen 2.5 inches compared to the smooth mandrel bent 3.5" which goed to 4 inches !!
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From: Snohomish, Washington
Originally Posted by jdadamsjr
Yep, sometimes it takes "getting used to it" to be able to tell a difference...
I went from the stock 03 crushed downpipe to a 3.5" to 4" downpipe and it can't HELP but make a difference...
Seat of the pants I felt a difference... how much? I don't know since I have no hard numbers before and after...
Will take a picture of the stock downpipe they pulled off to show how ptitful it is !
Let say this - it is like a crushed and mishapen 2.5 inches compared to the smooth mandrel bent 3.5" which goed to 4 inches !!
I went from the stock 03 crushed downpipe to a 3.5" to 4" downpipe and it can't HELP but make a difference...
Seat of the pants I felt a difference... how much? I don't know since I have no hard numbers before and after...
Will take a picture of the stock downpipe they pulled off to show how ptitful it is !
Let say this - it is like a crushed and mishapen 2.5 inches compared to the smooth mandrel bent 3.5" which goed to 4 inches !!
I have an 04 and it already looks as though it is a 3 inch round DP. I am not sure that replacing it would do that much since it goes into the CAT anyway the same size.
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From: Snohomish, Washington
It did look pretty big but I did not look at the center. I was thinking about taking it out altogether and putting it back if I needed to take it in for warranty but I will wait a few more miles for that.
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From: 3rd Rock
Originally Posted by jasfaa
It did look pretty big but I did not look at the center. I was thinking about taking it out altogether and putting it back if I needed to take it in for warranty but I will wait a few more miles for that.
What happens if dies on the freeway 30 miles form home.
Post Fiend
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And well, Ford will not be as mad at you as the Federal Government will be for leaving the cat out :-)
It is a Federal Law to have it in there.... and emission checks, inspections, police stopping you for something else and discovering this may be more of a problem for u :-)
And actually some have done 1/4 mile and dyno test and not seen any significant difference in the performance with or without the cat ....
One thing the cat will also do for you is tone down the Turbo-jet whine if you run an aftermarket exhaust...
While I think the turbo-jet sound is fantastic - too much of anything is not good :-)
It is a Federal Law to have it in there.... and emission checks, inspections, police stopping you for something else and discovering this may be more of a problem for u :-)
And actually some have done 1/4 mile and dyno test and not seen any significant difference in the performance with or without the cat ....
One thing the cat will also do for you is tone down the Turbo-jet whine if you run an aftermarket exhaust...
While I think the turbo-jet sound is fantastic - too much of anything is not good :-)